Method and apparatus for combining low-dynamic range images to a single image
AssigneeThunder Software Technology Co., Ltd.
InventorsAngel Dragomirov IVANOV, Stefan Parvanov BONCHEV
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Abstract
The invention discloses a method to combine low-dynamic range images with different exposures to construct a high-dynamic range image. The method deals with the motions such that to minimize the chance of such “non-recoverable” occlusions and avoids the necessity of knowing or finding the response functions of the low-dynamic range images. Apart from that, the method is fast enough to be used in a mobile camera device and produce good user experience.
Claims20
A method for combing low-dynamic range images to a single image, the method comprising:
- acquiring low-dynamic range images with different EV compensation values;
- detecting areas of non-similarity of the images by equalizing image brightness according to mutual 2D histograms;
- modifying the images in the non-similarity areas before a Laplacian decomposition to the images;
- re-distributing and adapting different fusing weights to the images to fuse a single height dynamic range image.
An apparatus for combing low-dynamic range images to a single image, comprising:
- an acquisition module used to acquire low-dynamic range images with different EV compensation values;
- a detection module used to detect areas of non-similarity of the images by equalizing image brightness according to mutual 2D histograms;
- a modification module used to modify the images in the non-similarity areas before a Laplacian decomposition to the images;
- a fusing module used to re-distribute and adapt different fusing weights to the images to fuse a single height dynamic range image.
Dependencies are inferred from the claim text.